(written as M)1 048 576, equal to 220
(written as M)M type stars are the coolest of all, with surface temperatures of less than 3500°. Such stars are cool enough to allow some molecules – rather than just isolated atoms – to exist in their outer layers. M stars tend to be orange in colour and Betelgeuse in Orion is the classic member of the class.
(written as M)Prefix for object designations in the Messier Catalogue
(written as M)In economic models involving international trade, M is usually chosen to represent imports, and X to represent exports, perhaps because I and E have too many other uses.
- A prefix which serves to produce derivative words pertaining to mobile communications concepts. For instance, m-business, or m-mail. It is an abbreviation of mobile.
(written as M)one million.
(written as M)symbol for 1,048,576, used only in computer and electronic related applications.
(written as M)morphine. A drug users’ abbreviation.